$93+ Cheap flights from St. Louis (STL) to Mexico
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MEX
Feb 28 — Mar 71
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Mexico
Cheapest flights from St. Louis to MexicoExplore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
Explore the most affordable flight options available from St. Louis to Mexico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/98:22 pm
STL
- CUN
2 stops14h 54m
Multiple Airlines
Thu 2/1912:24 pm
CUN
- STL
1 stop25h 45m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/153:49 pm
STL
- CUN
1 stop16h 29m
Multiple Airlines
Thu 2/1912:24 pm
CUN
- STL
1 stop25h 45m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:17 pm
STL
- CUN
1 stop11h 34m
Multiple Airlines
Wed 2/252:00 pm
CUN
- STL
2 stops34h 59m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/910:16 am
STL
- CUN
2 stops14h 20m
Multiple Airlines
Sun 2/152:47 pm
CUN
- STL
1 stop17h 04m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:49 pm
STL
- CUN
1 stop15h 01m
Multiple Airlines
Wed 2/2510:13 am
CUN
- STL
1 stop13h 14m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$327
This Orbitz deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/48:17 pm
STL
- CUN
1 stop11h 34m
Frontier
Mon 3/912:15 pm
CUN
- STL
1 stop11h 04m
Frontier
Deal found 1/27![Frontier logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/21:54 pm
STL
- MEX
1 stop27h 11m
Multiple Airlines
Mon 3/910:50 pm
MEX
- STL
2 stops33h 59m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$329
This Priceline deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:49 pm
STL
- CUN
1 stop15h 01m
Frontier
Wed 2/2511:42 am
CUN
- STL
Nonstop3h 27m
Frontier
Deal found 1/27![Frontier logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/68:22 pm
STL
- CUN
1 stop17h 58m
Frontier
Fri 2/132:47 pm
CUN
- STL
1 stop17h 04m
Frontier
Deal found 1/26![Frontier logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/98:22 pm
STL
- CUN
2 stops14h 54m
Multiple Airlines
Fri 2/1311:42 am
CUN
- STL
Nonstop3h 27m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/173:49 pm
STL
- CUN
1 stop16h 29m
Multiple Airlines
Tue 2/242:00 pm
CUN
- STL
2 stops33h 27m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/33:49 pm
STL
- MEX
1 stop27h 56m
Multiple Airlines
Wed 3/1110:50 pm
MEX
- STL
2 stops33h 59m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$349
Find flight deals from St. Louis to Mexico
Keep the following information in mind while searching for St. Louis to Mexico flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $322 (Kiwi.com) |
One-way from | $93 (Super.com) |
Popular in | December |
Cheapest in | September |
Average price | $745 |
Good round-trip deal | $413 or less |
Good one-way deal | $282 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Mexico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from St. Louis to Mexico that are best for you.
Fly from
St. Louis
Fly to
Mexico
Route
Depart
Return
Price
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Mon 3/2
1:54 pm-5:05 pm
1 stop27h 11m
Mexico City Benito Juarez
Mon 3/9
10:50 pm-9:49 am
2 stops33h 59m
$329
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Mon 4/27
6:00 am-9:17 am
Nonstop3h 17m
Cancun
Sat 5/2
2:36 pm-11:19 pm
1 stop8h 43m
$339
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Fri 3/20
12:16 pm-8:06 am
1 stop19h 50m
Cancun
Wed 3/25
4:09 pm-10:31 am
1 stop18h 22m
$349
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Tue 2/17
3:49 pm-9:18 am
1 stop16h 29m
Cancun
Fri 2/20
10:50 am-6:51 am
2 stops21h 01m
$364
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Sun 4/19
9:59 am-8:14 pm
1 stop10h 15m
Cancun
Thu 4/23
11:00 am-5:44 pm
1 stop6h 44m
$384
St. LouisGuadalajara
STL - GDL
STLGDL
Lambert-St Louis
Fri 2/27
3:49 pm-6:13 pm
1 stop26h 24m
Guadalajara Miguel Hidal
Fri 3/6
10:25 am-9:49 am
2 stops23h 24m
$385
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Sun 2/15
3:49 pm-7:45 pm
1 stop27h 56m
Mexico City Benito Juarez
Sun 3/1
1:20 pm-6:51 am
2 stops17h 31m
$388
St. LouisLeón
STL - BJX
STLBJX
Lambert-St Louis
Mon 4/27
6:00 am-4:20 pm
2 stops35h 20m
León Del Bajio
Wed 5/13
10:36 am-3:15 pm
1 stop27h 39m
$391
St. LouisMexico City
STL - MEX
STLMEX
Lambert-St Louis
Sun 2/8
5:42 pm-7:45 pm
1 stop26h 03m
Mexico City Benito Juarez
Fri 2/13
1:20 pm-6:51 am
2 stops17h 31m
$397
St. LouisCancún
STL - CUN
STLCUN
Lambert-St Louis
Mon 3/23
12:16 pm-12:37 pm
1 stop24h 21m
Cancun
Sun 3/29
4:09 pm-11:19 am
2 stops43h 10m
$399
Showing 1-10 of 60 results
Best time to book a flight from St. Louis to Mexico
Have a flexible travel schedule? Discover the best time to fly to Mexico from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Mexico
What is the cheapest month to book a flight from St. Louis to Mexico?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Mexico (average of $156). Flying from St. Louis to Mexico in July is currently the most expensive (average of $226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from STL to MX?
Find hourly flight availability from St. Louis to Mexico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.
When flying from St. Louis to Mexico, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Mexico
Get insights into the airlines that provide service to Mexico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Mexico. Reviews last updated January 29, 2026.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from St. Louis to Mexico. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Mexico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for St. Louis to Mexico
See prices for flight routes from nearby airports that may be better suited for you.
Top 9 airlines flying from St. Louis to Mexico
Discover the top 9 airlines that operate flights from St. Louis to Mexico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$130 | Average$292 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$174 | Average$370 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$179 | Average$571 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$196 | Average$408 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$196 | Average$536 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$330 | Average$620 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$416 | Average$638 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$419 | Average$636 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$527 | Average$597 | FlexibilityNo cancel fee | On-time75% |